Double hung window



Feb. 2, 1965 A, J. BIRO 3,167,822

DOUBLE HUNG WINDOW Filed Aug. 30, 1963 2 Sheets-Sheet 1 Eig Feb. 2, 1965 A. J. BlRo DOUBLE HUNG wINnow 2 Sheets-Sheet 2 Filed Aug. 30, 1963 5. V. 0 MM T 8 K Nl o/m V JG, T mm MA a M n M L A Y BM,

United States Patent O Pennsylvania Filed Aug. 30, 1963, Ser. No. 305,759 7 Claims. (Cl. Ztl- 52) This invention relates to double hung windows, and more particularly to means for holding the lower sash in different raised positions.

It is among the objects of this invention to provide a double hung window, in which lthe lower sash can be held positively in different predetermined open positions without the use of springs, weights, sliding bolts r other separate elements.

In accordance with this invention the opposite sides of a window frame are provided with Vertical side channels formed between inner and outer side flanges. The inner surfaces of the outer flanges normally are engaged by the outer surface of the lower sash, but the distance between the inner flanges is greater than the width of the lower sash. Slidable vertically in the channels are horizontal pivot members that project into them from the top of the lower sash. Supporting members secured to the lower part of the lower sash project laterally therefrom into the channels, where they likewise are movable vertically. The inner flanges are provided below the pivot members with vertically spaced pairs of notches, through which the supporting members can leave the channels to enable the bottom of the lower sash to be swung inwardly before the sash is raised high enough for the suporting members to be swung back into the channels through a higher pair of the notches. Below at least the higher pair of notches there are stops inside the channels for supporting the supporting members in order .to support the raised lower sash.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which FIG. l is an inside view of my Window closed;

FIG. 2 is a similar view, but with the lower sash raised part way;

FIG. 3 is an enlarged fragmentary view of the lefthand side of the window as seen in FIG. l;

FIG. 4 is an enlarged fragmentary view of the lower left-hand corner of the raised lower sash as seen in FIG. 2;

FIG. 5 is a vertical cross section taken on the line V-V of FIG. 3;

FIG. 6 is a view similar to FIG. 5, but with the lower sash in the act of being raised;

FIG. 7 is a vertical cross section taken on the line VII-VII of FIG. 4; and

FIG. 8 is a horizontal cross section taken on the line VIII-VIII of FIG. 3.

Referring to the drawings, a window trame 1, preferably made of metal, is of such configuration that it can be mounted in the usual window opening. Suitably mounted in the upper half of the frame is an upper sash 2. The opposite sides of this sash are disposed in vertical channels 3 (FIG. 8) formed in the sides of the window frame and usually extending the full height of the inside of the frame. The sash may be held in the upper part of the frame by any suitable means.

At the inner side of the upper sash is another pair of channels 4 formed between the inner and outer side flanges 5 and 6 that may be integral with the window frame. A lower sash 7 is disposed in the lower half of the frame, with the outer surface of the opposite sides of the sash engaging the inner surfaces of the outer anges 6 of inner channels 4 as shown in FIGS. 5 and 8.

3,l67,322 Patented Feb. 2, 1965 However, the distance between the inner ilanges of those channels is slightly greater than the width of the lower sash, and the inner flanges preferably are located in the same vertical plane as the inner surface of the sash.

To hold the 'lower sash in the frame, horizontal pivot members 9 are secured to the top of the sash and project laterally therefrom into side channels 4, in which they slidingly engage the inner surfaces of inner lianges 5. These pivot members are disposed partly or entirely above the lower sash so that its bottom can be swung out of the frame and into the room without the upper edge of the sash binding against the outer flanges of the channels. It is preferred that the pivot members be joined at their inner ends to L-shaped corner brackets 10 mounted in the corners of the sash frame. The frame may be formed from metal rails that are vsubstantially H shape in cross section, with the outer edges of the rails provided with inwardly projecting ribs 11 that overlap the corner brackets. The latter may be provided with side depressions 12 (FIG. 3), into which the sides of the sash frame are indented to lock everything tightly together.

To normally hold the bottom of the lower sash in the frame so that the sash will lie ilat against the outer flanges of the channels, supporting members 14 similar to pivot members 9 project laterally from the lower part of the sash into the adjacent channels. The supporting members may be projected from lower corner brackets 15 inside the lower corners of the sash frame.

It will be seen that the lower sash can be raised and lowered; but, according to this invention, it can be raised straight up channels 4 only a short distance before the bottom of the sash is swung out of the channels. This is due to the inner flanges 5 of channels 4 being provided with vertically spaced notches 16, from the tops of which deecting members 17 are inclined downwardly across the inside of the channels behind the notches for compelling supporting members 14 to pass out through the notches when the sash is raised, as shown in FIG. 6. Preferably the deflecting members are tongues cut from the inner flanges and bent back into the channels to form the notches. Thus, at the same time the notches are formed, the inclined tongues are formed.

After the supporting members have been guided out of the channels through the notches, the inclined lower sash can be raised any desired distance in the frame as the pivot members slide up in channels 4, but it can be held only at predetermined levels. This holding is accomplished by providing the inside of the channels, a short distance below each pair of notches located above the lowest pair, With `stops on which the supporting members can rest. These stops may be formed` conveniently by struck out portions 18 of the inner flanges bent into the channels. When the lower sash has been raised far enough to position its supporting members beside the desired pair of notches, the `supporting members are swung back into the channels through the notches and then the sash is allowed to descend a short distance to rest the supporting members on the underlying pair of stops as shown in FIG. 7. This holds the sash in raised position.

To close the window, the sash lirst is raised so that the supporting members slide up the overlying dellecting tongues and out of the notches, and then the inclined sash can be lowered until the supporting members can be swung back through the lowest pair of notches and into channels 4 again. As the supporting members move vertically from one pair of notches to another, they slide along the outside of inner anges 5.

While the window is closed, the upwardly aring inner i the lower partof the lower sash outwardly against outer anges 6; At the same time, pivot members 9 are pressed outwardly by depressed areas 22 of flanges 5 to force the upper part of .the lower. sash out against flanges 6. Consequently, While the window is closed, it is sealed because the lower sash is pressed tightly against the outer flanges of the inner channels.

This invention permits the lower sash to be supported in any desired number of predetermined positions, depending on the number of notches 16, without having to use weights, springs, separate movable locking members or the like. By swinging the bottom or the sash out into the room andv then tilting the top of the sash to raise one pivot member 9 relative to the other, those members can be released from the channels topermit the sash to be entirely removed from the frame for cleaning or replacement of a broken window pane.

According to the provisionsof the patent statutes, I have explained the principle of my invention and have described what I now consider to represent its best embodiment. However, I desire to have it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specically described.

I claim:

l. A double Yhung window comprising awindow frame, upper and lower window sash disposed in said frame, means supporting the upperA sash in the frame, opposite sides of the frame being provided with vertical side channels yformed between inner and outer side flanges offset inwardly from the upper sash, the inner surfaces of the outer anges normally being engaged by the outer surface of the lower sash, the distance between .the inner flanges being greater than the width of the lower sash, horizontal pivot members secured to the top of the lower sash and projecting laterally therefrom into said channels and slidable vertically therein, supporting members rigidly secured to the lower part of the lower sash and project- Ving laterally therefrom into said channels and movable vertically therein, said inner anges being provided below saidV pivot members with vertically spaced pairs of notches, deecting members in the channels at the tops of the notches to prevent said supporting members from being raised yinside the channels above the notches, the notches being formed to permit a pair of said supporting members to leave the channels to enableV the bottom of the lower sash to be swung inwardly Vprior to raising the sash high enough .for the supporting members to be swung back into the channels through a higher pair of said notches, and stopsl inside. the channels below said higher pair of notches for supporting said supporting members in order to support the raised lower sash.

` 2. A window according to claim l,.in whichthe lower sash has a hollow frame, the windowgincluding an angle bracket mounted inside'each lower corner of the sash frame, and said supporting members being -rigidly connected to said brackets. f

3. A windowaccording to claim 1, in which said stops are struck-out portions of saidV inner flanges.

4. A window according to claim'l, said deecting members being inclined downwardly lfrom :the tops of said notches and across the associated channels to force said supporting members out through the notches when the supporting members'are raised Vin the channels.

5. A window according to claim 4, in which said deecting members are integral tongues of said inner flanges bent back to form said notches. Y

6. A window .according to claim l, including an up-` wardly opening bottom. channel connecting the lower ends of the vertical channels and receiving said supporting members in their lowermost position, the supporting members being provided with upwardlyy and inwardly inclined surfaces engageable with the inner ange of said bottom channel to force the lower part of the lower sash outwardly against the outer flanges of the channels.

7. A window according to claim', in'which said inner vertical flanges are provided with depressed portions for engaging said pivot members in their lowermost position to force the upper part of the lower sash outwardly against said outer vertical flanges.

References Cited bythe Examiner UNITED vSTATI-:S PATENTS Re. 24,552 lO/58 Flicker 20-52.2 2,782,885 2/57 Bianco 189-72 2,965,935 12/60 Olsen 20-52.2 3,030,672 4/62 Mumendey 20--52 HARRISON R. MOSELEY, Primary Examiner. 

1. A DOUBLE HAVING WINDOW COMPRISING A WINDOW FRAME, UPPER AND LOWER WINDOW SASH DISPOSED IN SAID FRAME, MEANS SUPPORTING THE UPPER SASH IN THE FRAME, OPPOSITE SIDES OF THE FRAME BEING PROVIDED WITH VERTICAL SIDE CHANNELS FROMED BETWEEN INNER AND OUTER SIDE FLANGES OFFSET INWARDLY FROM THE UPPER SASH, THE INNER SURFACES OF THE OUTER FLANGES NORMALLY BEING ENGAGED BY THE OUTER SURFACE OF THE LOWER SASH, THE DISTANCE BETWEEN THE INNER FLANGES BEING GREATER THAN THE WIDTH OF THE LOWER SASH, HORIZONTAL PIVOT MEMBERS SECURED TO THE TOP OF THE LOWER SASH AND PROJECTING LATERALLY THERE FROM INTO SAID CHANNELS AND SLIDABLE VERTICALLY THEREIN, SUPPORTING MEMBERS RIGIDLY SECURED TO THE LOWER PART OF THE LOWER SASH AND PROJECTING LATERALLY THEREFROM INTO SAID CHANNELS AND MOVABLE VERTICALLY THEREIN, SAID INNER FLANGES BEING PROVIDED BELOW SAID PIVOT MEMBERS WITH VERTICALLY SPACED PAIRS OF NOTCHES, DEFLECTING MEMBERS IN THE CHANNELS AT THE TOPS OF THE NOTCHES TO PREVENT SAID SUPPORTING MEMBERS FROM BEING RAISED INSIDE THE CHANNELS ABOVE THE NOTCHES, THE 